Projecting apparatus.



A. G. PRBVIN.

PBOJEGT ING APPARATUS. APPLICATION nun n11. 1, 1011.

1,034,833. PatentedAug. 6,1912.

2 SHEETS-SHEET 1.

WITNESSES INVENTOR A. G. PREVIN- PROJEGTING APPARATUS. APPLICATION FILED MAR. 7, 1911. 1,034,833, Patented Aug. 6,1912.

I 3 SHEETS-SHEET 2.

INVENTOR l 1 I l ARTHUR G. PREVIN, or

NEW YORK, N. Y., Ass1G oR T iiASE'EALLEoN me, A

CORPORATION OF NEW YORK.

PRoJEcTiN APPARATUS.

T 0 all whom it may concern:

. Be it known that I, ARTHUR G. PREVIN,

' residing at New-York city, in the county ,paratus, and more particularly to apparatus of the magic lantern or stereopticon type, the cardinal features of this type be ing common in the art and comprising, broadly, a lens, a transparent or opaque object whose image is to be projected, and lighting means to accomplish such projection. Heretofore machines of this character have been adapted to the utilization, within the area effective for project-ion or reflection, either of a fixed image, or a movable image having a predetermined path of travel as in the case of the s o'called magic lantern or post-card projector, or of a plurality of single fixed images, shown individually. and successively, as in the case of the so-called motion-picture machine.

The prime object of my invention is to provide a relatively movable slide or a plurality of relatively movable slides, in combination with a stereopticon or other optical machine of the above type equipped either with or without a relatively fixed and immovable master slide (the term slide being used herein to denote any material or area, transparent or opaque, upon which appears any representation for projection or reflect-ion); said relatively movable slide or each of said plurality of relatively movable slides preferably being so mounted,

either on a relatively invisible support or on a relatively transparent support, or otherwise, that, in combination with suitable operating mechanism, the paths of travel and positions of rest of said relatively movable slide or slides and of the indicium projection thereof with respect to a screen may be within the control of an operator.

Other objects will be in part obvious and in part pointed out hereinafter. r

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts which will be exemplified in the description hereinafter set forth, the scope of the application of which will be indicated in the'following claims.

Specification of. Letters Patent.

Application filed March 7, 1911.

Patented Aug. 6, 1-912.

Serial No. 612,881.

Referring now to the accompanying drawings, wherein is shown an embodiment of this invention which, for the purposes of illustration, is assumed 'tobe adapted for use in connection with a reproduction of an athletic event, more particularly iii this instance a game of baseball, Figure 1 is a side elevation, partly in section, showing a wellknown type of stereopticon or magic lantern, the main parts of which are familiar in the art, but so constructed as to illustrate a possible provision therein for the accommodation of the auxiliary parts constituting the essence of this invention; Fig. 2 is a rear elevation (with reference to the longitudinal axis of said stereopticon) of a possible type of mechanism, exemplifying a possible embodiment of my invention, adapted to be accommodated as aforesaid within said stereopticon; Fig. 3 is a sectional view of the mechanism illustrated in Fig.2, taken on the line ;1 y of said figure and looking in the direction of the arrows; Fig. 4 is a sectional view of a type of screen adapted under certain circumstances to receive with advanta e the image cast from said stereopticon, slowing also certain devices Which could be used in connection therewith.

Similar reference characters refer to similar parts throughout the several views of the drawings.

I desire it be understood that the term master-slide, as used herein, refers to any slide which is adapted to remain in its entirety fixed for a predetermined interval within a stereopticon or the like, or to a slide permanently fixed thereinyand that the term lens-area refers to the efiect-ive area of a lens in said stereopticon with r.e lation to the area upon a screen which would be illuminated by a normal illumination of the interior of said stereopticon.

Referring to the embodiment of this invention"disclosed in Figs. 1, 2 and 3, and more particularly to Fig. 1, 1 indicates a light-containing receptacle, 2 a slide-holder (adapted to accommodate a master-slide 2 hereinbefore mentioned), 3 a condensing lens, 4 an adjustable bellows, 5magnifying lenses, mounted in focusing tubes 6, 7 a standard for the support of receptacle 1,

the ordinary type and well-know-n'in the and 8 a base-plate; all of these parts being art. For the purposes of illustration, how- 1 ever, these parts have been so arranged, as shown, that there is provided a spaced relation between mouth 10 of the bellows 4 and slide-holder 2, to accommodate, within the area indicated by the line w-w, the auxiliary mechanism constituting a feature of this invention which has been hereinbefore referred to. A portion of this mechanism is shown in Fig. ,1 at 11.

Referring now particularly to Figs. 2 and 3, 11 indicates a main-frame adapted as here shown to be attached to base-plate 8 by means of screws 12 passing through flanges 13. 14 indicates ,an' integral, sub-frame, adapted to travell'torizontally within mainframe 11, substantially without friction, by virtue of the provision of pivoted rollers 15 mounted therein and adapted to ride upon rails 16. It will be seen that sub-frame 14 is in the main of rectangular shape, and that the same is substantially comprised by two parallel horizontal members and four parallel vertical members, constituting within itself a lefthand-side runway and a righthand-side runway, both parallel and each provided on its inner vertical surfaces with rails 17; the lefthand-side runway being adapted to accommodate traveling block 18, and the righthand-side runway being adapted to accommodate traveling block 19, each block having mounted therein pivoted rollers 20 adapted to ride upon rails 17 in said sub-frame 14.

Blocks 18 and 19, being adapted as above described for parallel movement, are rigidly connected by rods 21, so that the vertical movement of one of said blocks will cause a corresponding and simultaneous vertical movement of the other.

Block 18 is comprised of its upper and lower roller-carrying portions and a central frame 22. WVithin frame 22 is shown a transparent plate 23; the area outlined in dotted lines at 23 indicating for the purpose of illustration an assumed projectable area of the master-slide 2 carried in slide holder 2 hereinbefore mentioned. Over this area is shown an indicium 27 on plate in simulation of a baseball; since this embodiment is being described in this instance as adaptable to the reproduction of the progress of such a game. Similarly, block 19 is co1n prised of its upper and lower roller-carry- 'ing portions and a central frame 24. Frame '24 is therein provided in this instance with a substantially circular opening, adapted to expose lines, grooves or ridges disposed upon a suitable chart 24 placed therebehind, adapted to act as a guiding means. through the provision of index 25, for the relative movement of said frame 24 over 7 saidchart. An operating handle 26 for the block 19 is also shown. Having described a preferable embodi- 'ment of my invention, the operation thereof, which should be largely now be undcrstoodrlf it is that the tip of index 25, with reference to the chart 24 to be exposed through frame 2 1, agrees with the corresponding location of baseball 27, with reference to the fixed image of the masterslide, or-with reference to the lens-area of the stereopticon should a painted or delineated screen as above be used in connection with the operation of my invention, it will be seen that an operator may control the movements of index 2,5 over the chart and thereby cause any movgement of said index to bringabout a correspond ing movement of baseball indicium 27; for it is apparent that all vertical movements of index 25 Will'cause corresponding vertical movements of baseball indicium 27, due to the rigid connection by means of rods 21 between blocks 18 and 19, that all horizontal movements of index 25 will cause corre sponding horizontal movements of baseball 27, due to the integral construction of runways lel, and that consequently all oblique or curved movements of index 25 will cause corresponding oblique or curved movements of baseball 27, due to the coordinate operations of the vertical and horizontal components of movement. And since is preferably substantially transparent, the

obviouf may remembered late 23 5 supposed image 27 will be pro ected upon a 9 screen simultaneously with the casting thereupon of the matter on the master l ide. hereinbefore mentioned, and in such manner that the indicium projection will be super-posed thereover and have relative movement with reference thereto. There are, of course, other well-known mechanical-genpedients for accomplishing this duplication of movement between elements analogous to the delineation or a plurality of delineations 27 and the index 25, but the mechanism here set forth is deemed to be advantageous, on

account of its simplicity and durable reliable character.

It is to be understood that whether the screen or surface used in connection with the operation of my invention be plain, for,

the receipt of an image from a mast erslide or master-slides (such master-slide or master-slides being either within the'same stereopticon which contains the special mechanism herein described or within any other or separate stereopticon), or whether such screen or surface be painted or (a lincated thereon in simulation of an image which would be cast there-upon were such a master-slide or master-slides utilized it is also within the scope of my invention to use further auxiliary indicating devices in connection therewith; such as, for instance, the provision of such screen or surface, whether plain or painted as aforesaid, of relatively translucent material, so that there could be disposed therebehind illuminating devices, adapted to be shut on or off to lend additional significance thereto. For the purposes of illustrating the possibility of such a construction, I have shown in Fig. 4 a sectional View through such a screen or surface, wherein 28 indicates the screen itself, attached as shown at its upper end to a plate 29, bent as shown to inclose r. horizontal pintle 30. 32 indicates a wall and 33 indicates a stop attached to said plate 29, adapted to abut against said wall 32 when said screen 28 is allowed to hang normally in a vertical plane. An illuminating device 34 (with the necessary wiring therefor merely indicated) is disclosed for the purposes of this illustration; as is also a. second illuminating device 35 (with the necessary wiring therefor merely indicated), this second illuminating device being shown as being inclosed in a cylindrical hood 36, adapted to better center the light therefrom upon the portion of such screen behind which such device is positioned.

It is to be understood that'whenever I speak of indicium-projection, I am referring to a visually distinct area produced upon a screen by optical means, however carried or supported. For instance, I may produce such an area by use of a projector and a transparent slide having an opaque spot thereon, or I may use an opaque slide having a transparent spot thereon; or any other means may be employed, to the end mentioned above.

By the term freely movable, whether referring to an indicium-projection or to means employed in producing the same, I mean optionally movable in different paths.

Inasmuch as many changes could be made in the above construction, and inasmuch as many apparently widely different embodiments of my invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An apparatus of the kind described, comprising a screen having shown thereon a representation of a game field or the like, and a device for projecting upon the screen an isolated indicium-pro ection relatively small compared to said field representation; said device including a operating elements, one 0 which is mov;

lurality of coable; whereby the said indicium-projection may be caused to move freely over said representation upon the screen to represent the movements of a freely movable object of play or action uponsuch a field.

2. An apparatus of the kind described, comprising a screen having shown thereon a representation of a game field or the like; and means for projecting upon the screen an isolated imiicium-projection relatively small compared to the said representation, said means including a freely movable member provided with an indicium portion, whereby the indicium-projection may be caused to move freely over said representation, to rep resent the movements of a freely movable object of play or action upon such av field.

3. In combination, a projecting appa' rat s; and a member carrying an isolated indicium adapted to be projected as an isolated indicium-projection by said projecting apparatus; said member mounted so as to be freely "movable with respept to the optical axis of the projecting apparatus.

4. In combination, a projecting apparatus; and a slide, carrying an indicium, and so mounted as to be freely movable with respect to the optical axis'of the projecting apparatus.

5. In combination, a projecting apparatus; and a slide carrying an isolated indicium and freely movable with respect to the optical axis of the projecting apparatus, and means for moving said slide.

'6. In combination, a projecting apparatus and a slide carrying an indicium and freely movable with respect to the optical axis of the projecting apparatus, a guide chart, a pointer movable over said chart, and connections between said slide and said pointer whereby they are moved in corre spondence.

7. In combination, a projecting apparatus and a transparent slide provided with a single relatively opaque indicium and freely movable with respect to the optical of the projecting apparatus, and means for moving said slide.

8. In combination, a projecting apparatus, a fixed slide therein bearing an indicium, and a freely movable slide in superposed relation to said first named slide and bearing an indicium. 9. In combination, ratus, a fixed slide therein bearing an in- ,dicium a member carrying an isolated indicium adzfpted to be projected by said pro- .jecting apparatus, and freely movable with respect to the optical axis thereof; said member being in superposed relation to said fixed slide; and means for moving said member.

10. An apparatus of the kind described, comprising a screen having shown thereon a representation of a game field or the like,

itp'rojecting" appa and means for producing upon the screen a freely moving isolated indicium-projection relatively small compared to said field representation; whereby the movements of said indicium-projection in different directions over and to difi'erent positions upon said field representation will represent the movements of a freely movable object of play or action upon such a field.

11. An apparatus of the kind described, comprising in combination a screen; and means for projecting upon said screen an indicium-projection representing a game field or the like, and for producing upon the screen a freely moving isolated indiciumprojection relatively small compared to said field representation; whereby the movements of said isolated indicium-projection in different directions over and to different po sitions upon said field representation will represent the movements of a freely movable object of play or action upon such a field.

12. A display device comprising in combination a screen having shown thereon a relatively fixed representation, and a device for projecting upon the screen an isolated indicium-pro ection, said device comprising means constructed and arranged whereby the said. indicium-projection may be caused to move freely over said screen with reference to said relatively fixed representation.

ARTHUR G. PREVIN. Witnesses:

C. HAVARD, AUGUST ROTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

